VEINS. 23 



Csphal'ica up between deltoid and pectoralis major to 

 axillary veins 



Ifc'dia: palmar surface of hand and middle of forearm 

 (communicates with ulnar and radial), to median-cephalic and 

 median-basilic at elbow. 



Oephal'ica mo'dla : obliquely outwards from bend elbow, be- 

 tween supinator longus and biceps ; empties into cephalic as a 

 formative branch. 



Basil'ica me'lia: obliquely inwards behind biceps and pro- 

 nator radii teres ; empties into basilic as formative branch. 



The following are the deep veins, and accompany their 

 respective arteries as ve'nce cont'ites t intercommunicating 

 with each other, and the superficial veins, frequently. 

 , (2) empty into the superficial palmar. 

 SUporflcialeS, (2) empty into ulnar and radial. 

 a'res proftin'da, empty into radial venae comites. 

 Xnteroa'.OB, (2) accompany the anterior and posterior in- 

 terosseous arteries, commencing at the wrist, terminating 

 in venae comites of the ulnar. 



Cca'ites rad.a'iii, form, with the ulnar, the comites of 

 brachial. 



Comi';03Ulna'ris, with the radial, form comites of brachial. 

 Con'1.03 brach.a'liS, receiving veins corresponding to the 

 branches of the brachial artery, empty into the axillary vein. 

 Alilla'rfa, is the continuation of the basilic. Commences at 

 lower border of the axillary space ; receives veins correspond- 

 ing to branches of its artery, and terminates in the subclavian 

 at outer border ist rib. [Valves at inferior border subscapu- 

 laris, terminations of vena subseapularis and vena cephalica.] 

 Sub:la'via, continuation of axillary, emptying into vena in- 

 nominata at right sterno-clavicular articulation. Separated 

 from its artery by scalenus anticus muscle and phrenic nerve. 

 Receives external and anterior jugulars, branch from cepha- 

 lic, and internal jugular. [Valves just external to entrance of 

 external jugular, or about i inch from its termination.] 



NERVES. 



PLSX'TJS BBACHIA'LIS! formed by anterior roots ^.lower cer- 

 vical and ist dorsal nerves. 5th and 6th cervical unite, then 

 are joined by yth to form upper trunk. 8th cervical and ist 

 dorsal unite to form lower trunk. Both trunks accompany the 

 subclavian artery to the axilla, lying upon its outer side. Op- 

 posite clavicle, each of the trunks gives off a fasciculus, 

 which, uniting, form a third trunk ; in the centre of the 



